<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .flex-box {
            display: flex;
            display: -webkit-flex;
            flex-direction: row;
            /* flex-wrap: wrap; */
            justify-content: center;
            height: 200px;
            background-color: antiquewhite;
            align-items: center
        }
        
        .third {
            background-color: green;
            width: 50px;
            margin: 0 1px;
            flex-shrink: 0;
        }
        
        .three {
            order: 12;
            align-self: flex-end
        }
        
        .one {
            order: 13;
            flex-grow: 1
        }
        
        .two {
            order: 11;
            flex-grow: 2
        }
    </style>
</head>

<body>
    <div class="flex-box">
        <div class="third one">1</div>
        <div class="third two">2</div>
        <div class="third three">3</div>
        <div class="third">4</div>
        <div class="third">5</div>
        <div class="third">6</div>
        <div class="third">7</div>
        <div class="third">8</div>
        <div class="third">9</div>
        <div class="third">10</div>
        <div class="third">11</div>
        <div class="third">12</div>
    </div>
</body>

</html>